I’d choose which ever one is not PostgreSQL.

Yeah and a new 12 bay NAS to put them all in. I had a 2 bay that I expanded with a bunch of USB drives before, but that was starting to get really messy. Basically took my entire thirteenth salary.

My first batch (6x 20TB) is at 8611 hours.

The 2nd batch (3x 20TB) is at 5612 hours

Synology has it’s own version of raid5 that can handle your specific disk configuration without any modification:

https://www.synology.com/en-us/support/RAID_calculator?drives=4 TB|4 TB|4 TB|4 TB|2 TB|2 TB&raid=SHR_1|RAID_5

Not sure if similar things are availible on other platforms.

.mkv is just a container and can contain any encode. All my av1 encodes are .mkv files.

But the majority of my videos are in h264 for compatability, though I’ve been adding more av1 and h265 encodes lateley. But storage isn’t much of a concern for me.

Pretty much a perfect 1 Gigabit, because that’s my LAN speed and my server is at home :(